A Yankee Hill Machine Sidewinder piston for 9mm suppressor use, threaded 13.5x1 LH. On a tilting-barrel pistol, the piston and booster assembly is what allows the host to cycle reliably with a can hanging off the muzzle, and thread pitch has to match the barrel exactly. The 13.5x1 left-hand pattern is common on European-made 9mm barrels, so this is the piece that lets those hosts run a YHM Sidewinder without hunting for an adapter of questionable origin. YHM has been building suppressor components for decades and the machining reflects it. Check your barrel threads before ordering.

In stock and ready to ship straight to your door from Dawson Defense, an Arizona-owned licensed dealer.